body {
    background: #000;
    color: #fff;
    font-family: monospace;
    margin: 0;
}

.container {
    width: 90%;
    max-width: 900px;
    margin: auto;
    padding: 20px;
}

header {
    text-align: center;
    border-bottom: 1px solid #ff6600;
    margin-bottom: 20px;
}

h1 {
    color: #ff6600;
}

.layout {
    display: flex;
    gap: 20px;
}

.sidebar {
    width: 30%;
}

.content {
    width: 70%;
}

.box {
    border: 1px solid #ff6600;
    padding: 10px;
    margin-bottom: 15px;
}

a {
    color: yellow;
}

a:hover {
    background: #ff6600;
    color: white;
}

@media (max-width: 700px) {
    .layout {
        flex-direction: column;
    }

    .sidebar,
    .content {
        width: 100%;
    }
}